Dual-wavelength infrared anti-forgery ink and preparation method thereof

An anti-counterfeit ink and dual-wavelength technology, which can be used in inks, household utensils, applications, etc., can solve the problems of single, low anti-counterfeiting ability, and easy preparation

Inactive Publication Date: 2021-09-10
DONGGUAN HOPEWAY PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the optical variable anti-counterfeiting inks on the market are mainly ultraviolet anti-counterfeiting and single infrared anti-counterfeiting, which are widely used in the market, but the problem is that their anti-counterfeiting ability is low, easy to be imitated, difficult to identify, and because of easy preparation and easy detection and it is difficult to meet the high-level anti-counterfeiting requirements,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A dual-wavelength infrared anti-counterfeiting ink, comprising the following components by weight percentage: infrared anti-counterfeiting material 1: 3.5wt%, infrared anti-counterfeiting material 2: 0.75wt%, linking material: 1wt%, pigment 8wt%, auxiliary agent 30wt%;

[0033] The main component of the infrared anti-counterfeiting material one is YLiF 4 :Tm 3+ 、YLiF 4 :Yb 3+ 、YiF 4 :Ho 3+ 、NaYF 4 :Tm 3+ 、NaYF 4 :Yb 3+ 、NaYF 4 :Ho 3+ More than one of them; the preparation method of the infrared anti-counterfeiting material one is: Y 2 o 3 , LiF, NH 4 HF 2 、Er 2 o 3 、Tm 2 o 3 , Yb 2 o 3After mixing evenly in proportion, adjust the pH value of the solution: 2 to 5, put it into a polytetrafluoroethylene container, and then put it into a high-pressure reactor, react at 220°C for 4 to 5 days, and prepare it by suction filtration, washing, and drying. have to.

[0034] The second infrared anti-counterfeiting material is a compound with the following gener...

Embodiment 2

[0049] The dual-wavelength infrared anti-counterfeiting ink comprises the following components by weight percentage: infrared anti-counterfeiting material 1: 4.5wt%, infrared anti-counterfeiting material 2: 2wt%, linking material: 95wt%, pigment 30wt%, auxiliary agent 25wt%; said linking material , including the following components by weight percentage: (a) resin 15%, (b) solvent 55%, (c) vegetable oil 60%, (d) reactive diluent 2%. Wherein, (a) the resin is an alkylphenol phenolic resin; (b) the vegetable oil is linseed oil; the pigment is transparent varnish; and the auxiliary agent is carnauba wax.

[0050] The preparation method of infrared anti-counterfeiting material 1, the preparation method of infrared anti-counterfeiting material 2, and the preparation method of dual-wavelength infrared anti-counterfeiting ink are the same as in Example 1.

Embodiment 3

[0052] Dual-wavelength infrared anti-counterfeiting ink, including the following components by weight percentage: infrared anti-counterfeiting material 1: 4.0wt%, infrared anti-counterfeiting material 2: 1.8wt%, linking material: 85wt%, pigment 20wt%, auxiliary agent 25wt%; The material includes the following components by weight percentage: (a) resin 25%, (b) solvent 50%, (c) vegetable oil 70%, (d) reactive diluent 15%. Wherein, (a) the resin is an unsaturated polyester resin; (b) the vegetable oil is castor oil; the pigment is golden red; the auxiliary agent is carnauba wax.

[0053] The preparation method of infrared anti-counterfeiting material 1, the preparation method of infrared anti-counterfeiting material 2, and the preparation method of dual-wavelength infrared anti-counterfeiting ink are the same as in Example 1.

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Abstract

The invention discloses dual-wavelength infrared anti-forgery ink and a preparation method. The dual-wavelength infrared anti-forgery ink is prepared from the following components in percentage by weight: 3.5 to 4.5 weight percent of an infrared anti-forgery material I, 0.75 to 2 weight percent of an infrared anti-forgery material II, 1 to 95 weight percent of a binder, 0 to 30 weight percent of a pigment and 0 to 30 weight percent of an auxiliary agent. The dual-wavelength infrared anti-forgery ink is safer and higher in anti-forgery level, product forgery prevention is carried out through a printing method, the dual-wavelength infrared anti-forgery ink prepared through the method has two detection wavelengths, excitation and detection are carried out through the two wavelengths, the dual-wavelength infrared anti-forgery ink has high anti-forgery safety, and the dual-wavelength infrared anti-forgery ink prepared by the method has no restrictive requirements on printing equipment, printing materials and printing processes, can be applied to printing stocks such as paper, polymeric membranes, metals and the like, and can be applied and popularized as an expert-level anti-forgery technology.

Description

technical field [0001] The invention belongs to the technical field of anti-counterfeit inks, and in particular relates to a dual-wavelength infrared anti-counterfeit ink and a preparation method. Background technique [0002] Ink is an important material for printing. It is divided into conventional printing ink and anti-counterfeiting ink. The main purposes of conventional anti-counterfeiting are: 1. To provide verifiable public anti-counterfeiting to consumers or the public; Open (expert-level anti-counterfeiting) anti-counterfeiting technology, and common anti-counterfeiting inks mainly include temperature-changing inks, light-changing inks, ultraviolet and infrared invisible inks, etc. Anti-counterfeiting inks are widely used in the printing industry, especially in the printing of banknotes, valuable notes and other products (also known as anti-counterfeiting components or printed products). Optically variable anti-counterfeiting inks are an important part of anti-count...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50C09D11/103C09D11/105C09D11/102C09D11/104C09D11/107C09D11/10
CPCC09D11/50C09D11/103C09D11/105C09D11/102C09D11/104C09D11/107C09D11/10
Inventor 姚彪
Owner DONGGUAN HOPEWAY PACKING CO LTD
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